.center{
  display: flex;
  justify-content: center;
}

.page{
  color: #fff;
  width: 100%;
  height: 100%;
  display: flex;
  flex-direction: column;
  justify-content: space-between;
}

.bottom{
  color: #fff;
  font-size: 12px;
  display: flex;
  flex-direction: row;
  justify-content: space-between;
  align-items: flex-end;
  span{
    flex: 1;
    text-align: center;
  }
}

.active{
  position: relative;
  border-radius: 5px;
  overflow: hidden;
  border-radius: 5px;
  border: 1px solid ;
  border-bottom: none;
  border-image: linear-gradient(to bottom, #fff, transparent) 1;
  box-sizing: border-box;
  background: linear-gradient(
    to bottom, 
    rgba(255,255,255,.6) 0%, 
    rgba(255,255,255,.2) 49%, 
    rgba(0,0,0,.8) 50%,
    rgba(0,0,0,.4) 100%
  );
}